Upgr8 Universal 4-Ply High Performance 45 Degree Elbow Coupler Silicone Hose (2.5"(63MM), Red) Inner Diameter: 2.5''(63mm). Length: 9.0''(228mm). Thickness: 5MM Min temperature: -60 C/-140 F. Max temperature: 220 C/428 F. work pressure: 0.3 to 0.9 MPA. Bursting Pressure: 2MPA. Size tolerance: +/- 0.5MM.